Numbers that are not the sum of 4 tetrahedral numbers.

Terms

a(0) =17a(1) =27a(2) =33a(3) =52a(4) =73a(5) =82a(6) =83a(7) =103a(8) =107a(9) =137a(10) =153a(11) =162a(12) =217a(13) =219a(14) =227a(15) =237a(16) =247a(17) =258a(18) =268a(19) =271a(20) =282a(21) =283a(22) =302a(23) =303a(24) =313a(25) =358a(26) =383a(27) =432a(28) =437a(29) =443